EP 2215045 B1 20110803 - METHOD OF PREPARING A PURIFIED ESTER-SUBSTITUTED PHENOL STREAM
Title (en)
METHOD OF PREPARING A PURIFIED ESTER-SUBSTITUTED PHENOL STREAM
Title (de)
VERFAHREN ZUR HERSTELLUNG EINES GEREINIGTEN ESTERSUBSTITUIERTEN PHENOLSTROMS
Title (fr)
PROCÉDÉ DE PRÉPARATION D'UN COURANT DE PHÉNOL SUBSTITUÉ PAR UN ESTER PURIFIÉ
Publication
Application
Priority
- IB 2008054950 W 20081125
- US 94806307 A 20071130
Abstract (en)
[origin: US2009143610A1] A method of producing a purified ester-substituted phenol stream is provided. The method includes a first step of obtaining from a melt transesterification reaction a byproduct stream containing a residual ester-substituted diaryl carbonate, an ester-substituted phenol, a residual melt transesterification catalyst, and a catalyst degradation product. A second step includes treating the reaction byproduct stream to separate ester-substituted phenol and catalyst degradation product from residual ester-substituted diaryl carbonate and residual melt transesterification catalyst to create a light recycle stream containing ester-substituted phenol and catalyst degradation product and a heavy recycle stream containing residual ester-substituted diaryl carbonate and residual melt transesterification catalyst. A third step includes treating the light recycle stream to reduce catalyst degradation product concentration thereby producing a purified ester-substituted phenol stream.
IPC 8 full level
C07C 67/48 (2006.01)
CPC (source: EP US)
C07C 67/54 (2013.01 - EP US); C07C 67/58 (2013.01 - EP US); C07C 68/02 (2013.01 - EP US); C08G 64/307 (2013.01 - EP US); Y02P 20/584 (2015.11 - EP US)
C-Set (source: EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
DOCDB simple family (publication)
US 2009143610 A1 20090604; US 8034967 B2 20111011; AT E518822 T1 20110815; CN 101896453 A 20101124; CN 101896453 B 20130710; EP 2215045 A2 20100811; EP 2215045 B1 20110803; ES 2366423 T3 20111020; WO 2009069079 A2 20090604; WO 2009069079 A3 20090730
DOCDB simple family (application)
US 94806307 A 20071130; AT 08854240 T 20081125; CN 200880120691 A 20081125; EP 08854240 A 20081125; ES 08854240 T 20081125; IB 2008054950 W 20081125